Device  eob extracting tbactobs



T. F. BELLA.

DEVICE FOR EXTRACTIN ACTORS.

APPLICATION FILED MA .1920.

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T. F. BELLA. DEVICE FOR EXTRACTINGYTRACTORS.

APPLICATION FiLED MAYZS. I920.

Patented Dec. 28, 1920.

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Specification of Letters Patent. Pa$3ntgfi B 23 192) Application filedMay 25, 1920. Serial No. 384,077.

To all to hom it may concern:

Be it known that I, THEODORE F. BELLA, a citizen of the United States ofAmerica, residing at Stevens Point, in the county of Portage and Stateof lVisconsin, have 1nvented certain new and useful Improvements inDevices for Extracting Tractors, of which the following is aspecification.

This invention relates to certain new and useful improvements in devicesfor extracting tractors and the like from mud holes, and the inventionresides particularly in a pulley attachment for the driven supportingwheels of tractors adapted to have a cable anchored thereto and thenwound thereon by the power of the engine of the tractor so that when theother end of the cable is anchored to some distant point, an extractionor displacement of the tractor from a mud hole, ditch or the like willbe effected.

An object of the invention is to provide, in a device of the abovecharacter, an extremely simple, durable and eflicient pulley attachmentfor the driven supporting wheels of tractors so constructed as to enablethe same to be readily and rigidly applied to as well as readily removedfrom the wheel as found necessary and desirable.

Other objects will appear as the nature of the invention is betterunderstood, and the same consists in the novel form, combination and.arrangement of parts hereinafter more fully described in connection withthe accompanying drawings.

In the drawings, wherein like reference characters designatecorresponding parts throughout the several views,

Figure 1 is' a fragmentary elevational view of a tractor with thepresent invention applied thereto so as to illustrate the inannor inwhich it is used, the pulley per 86 being partly broken away,

Fig. 2 is a'substantially central vertical sectional view taken throughthe wall and pulley of Fig. 1,

Fig. 3 is a view similar to Fig. 2 taken at some distance to one side ofthe wheel axle whereby the pulley of the invention is illustrated inedge elevation.

Fig. 4c is an enlarged perspective view of one of the hub engagingsegments,

5 is an enlarged perspective view of a portion of the pulley per 86, and

Fig. 6 is a perspective view of one of the attaching rods, partly brokenaway.

Referring more in detail to the several \uews, a portion of a tractor Ais shown in Fig. 1, the supporting wheel a of said tractor being shownas standing in a mud hole or d1tch as at B.- Usually, the operation ofextractingthe tractor from a mud hole or the like is quite a laboriousand objectionable one for various well known reasons. and often timesthe wheel a simply revolves under englne power without tractive effortso that the extraction of the tractor is practically lmpossible withoutthe aid of some external device. This is often times true even in wow ofthe fact that the usual rim 5 of the wheel a is providedwith'non-slipplng tread members 6. Accordingly, the present invention isdesigned to provide a 11111311 improved means for supplying this nee Inthe preferred embodiment of the in ventlon, the same includes a metallicdrum or pulley 7 which is of substantially U- shape in cross section andwhich is provided at suitable intervals with outwardly proecting rigidears 8 upon the inner flange thereof. The threaded shanks or bolts 9 arepassed through the apertures of the ears 8 and also through alinedapertures prov1ded in theouter spokes 10 of the tractor supporting wheela. Extending radially inwardly from the inner face of the wheel rim 5 atregular intervals are four pairs of spaced rigid cars 11, each pair ofwhich issituated centrally between the adjacent pairs of cars 8 as shownin Fig. 1. An attaching rod 12 provided with a central eye 13 and endeyes 14 is arranged tangentially of the wheel a, one attaching rod beingprovided between each ear 8 and the pairs of cars 11 at each sidethereof, the bolts 9 each extending through a central eye'13 of aconnecting rod 12. The end eyes l l'of adjacent connecting rods 12 thusoverlap between the ears of each pair 11 and are attached to said pairof ears by bolts or the like 15. It will thus be seen that the fourattaching or connecting rods 12 provide a substantially rectangularframe work anchored at its corners to the rim of the wheel a andintermediate its corners 011 all sides to the pulley 7' whereby thelatter is quite rigidly and detachably'fastened in place.

Some means must be provided to insure positioning of the drum 7concentric with the rim 5 of the wheel a or with the vehicle axle 16,and it is preferable that this means Radially adjustable spokes areprovided for the drum 7, and each spoke comprises a pair of screws 19,respectively of right and left hand pitch and adjustably connected by aturn buckle knot 20, one of the screws19 being fastened at its outer endpivotally'or otherwise as at 21 to inwardly projecting ears 22 formed onthe drum 7, and the inner end of the other screw of each spoke beingprovided with a hub engaging segment 23. Each segment 23 embodies anarcuate plate having inwardly projecting lugs 24 upon its inner edgearranged to hook over the disk 18 whereby the segment is held againstoutward displacementfor relieving the drum 7 of outward strains. Eachsegment is also provided with a central inwardly projecting radial shoe25 which has its inner end curved to fit around the enlargement 26provided on hereinbefore described, and the cable 30 has the airle 16,and the connection of each seg' ment with the inner screw 19 of eachspoke may be a p votal one by passlng a rivet or bolt 27 through saidscrew as well as an outwardly projecting flange 29 provided in spacedrelation on the outer edge of the plate of each segment. Obviously, withthis construction, the turning of the turn buckle nuts 20 inonedirection effects firm engagement of the shoes 25 with the enlargement26 so that the drum is rigidly fixed in position after the attachingrods 12 have been applied as shown in Fig. 1. It will also be seen thatturning of the nuts 26 in the opposite direction will cause a withdrawalof the shoes 15'from the enlargement 26 and disengagement of the lugs 24from the disk -18 so that the drum 7 may be readily removed upondetachment of the rods 12. Further, the making of the connections 21 and27 pivotal ones, will allow swinging of the drum spokes and segments sothat the shoes 25 may accommodate themselves to their proper positionupon the enlargement 26.

At any suitable point around the same, the drum may be provided withmeans for anchoring one end of a cable 30 thereto for insuring windingof said cable on the drum 7 when the latter is rotated.

In operation, the drum 5 is applied to the wheel a as clearly shown inthe drawings and one'end anchored to the drum 7 while its other end maybe attached to some distant rigid member such as the peg 31 which isshown driven into the ground in Fig.1. The

engine of the tractor is then started for caustractor and this resultsin extraction of the latter from the mud hole, ditch or the like.

From the foregoing description it is believed that the construction andoperation of the present invention will be readily understood andappreciated by those skilled in the art.

Minor changes may be made without departing from the spirit and scope ofthe in vention as claimed.

What is claimed as new is 1. In a device for extracting vehicles frommud holes or the like, the combination with a vehicle wheel having a rimprovided with a plurality of rigid equally spaced inwardly projectingears, of a drum rim having a plurality of outwardly projecting rigidears positioned intermediate the ears of the wheel rim, and attachingrods arranged in end to end angular formation and each having its endsconnected to adjacent ears of the wheel rim and its intermediate of thedrum rim.

2. In combination with a drum rim having means to'rigidly attach thesame to and concentrically within the rim of a vehicle supporting wheel,radial spokes adjustable in length projecting inwardly from and carriedby said drum rim, and hub engaging segments carried upon the inner endsof said drum spokes including inwardly projecting diskengaging lugs forsupporting the drum rim against outward displacement.

8. In combinationwith a drum rimhaving means to rigidly attach the sameto and concentrically within the rim of a vehicle supporting wheel,radial spokes adjustable in length projecting inwardly from and carriedby said drum rim, hub engaging segments carried upon the inner ends ofsaid drum spokes including inwardly projecting disk engaging lugs forsupporting the drum rim against outward displacement, each of saidspokes involving a pair of screws respectively of right and left handpitch and adjustably connected by a turn buckle nut, one of said screwsbeing pivotally connected to the drum rim, and the other of said screwsbeing pivotally connected to a hub engaging segment.

4. In combination with a drum'rim having means to rigidly attach thesame to the rim of'a vehicle supporting wheel, radial spokes portion toone ear from and carried by said drum rim, and hub engaging segmentscarried upon the inner ends of said drum spokes and each including anarcuate band having end inwardly projecting lugs upon its inner edge.

5. In combination With a drum rim having means to rigidly attach thesame to the rim of a vehicle supporting Wheel, radial spokes adjustablein length projecting inwardly from and carried by said drum rim,

hub engaging segments carried upon the innor ends of said drum spokesand each including an arouate band having end inwardly projecting lugsupon its inner edge, and a central inwardly projecting shoe having aconcaved inner end face.

In testimony whereof I aifix my signature.

THEODORE F. BELLA.

